This 4G63 crankshaft (MD021500) offers perfect adaptability for Mitsubishi & CAT forklift fleets, ensuring longevity in high-rev material handling.
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This industrial-grade Mitsubishi 4G63 crankshaft (OEM: MD021500) is a forged steel component engineered for maximum fleet adaptability in material handling equipment. It prevents premature bearing failure in high-rev cycles and fits a wide range of Mitsubishi FG25 and Caterpillar P5000 forklifts. Factory direct pricing for global export.
While the Mitsubishi 4G63 engine is celebrated in automotive history for powering the Lancer Evolution, its true industrial legacy lies in its role as an unbreakable workhorse for material handling fleets worldwide. The 8-valve SOHC variant is a high-revving, incredibly reliable powerplant for countless forklifts, generators, and industrial machines. However, these demanding applications, characterized by constant stop-start cycles and sustained high RPMs, place enormous stress on the engine’s rotating assembly. This often leads to oil degradation and subsequent main bearing spin, a catastrophic failure for any commercial operation.
Ruich Value’s MD021500 replacement crankshaft is specifically engineered for this punishing industrial environment. Forged from high-tensile 42CrMo steel alloy—a significant upgrade over cast alternatives—our crankshafts offer superior resistance to torsional stress and fatigue. By applying a deep nitriding treatment and precision polishing all journals to an exact Ra finish, we ensure optimal oil clearance and lubrication, drastically reducing the risk of bearing failure. This component is the definitive solution for rebuilding Mitsubishi and Caterpillar forklift engines for another tour of duty.
| Product Name | Industrial Engine Crankshaft Assembly |
|---|---|
| OEM Part Number | MD021500 |
| Cross Reference | MD040518, MD184683 |
| Target Engine | Mitsubishi 4G63 (8-Valve SOHC, Industrial Gas/LPG) |
| Material | High-Tensile Forged Steel Alloy (42CrMo) |
| Surface Treatment | Nitrided Journals (HRC 50-55), Dynamic Balancing |
| OEM Brand | Application Category | Known Compatible Models |
|---|---|---|
| Mitsubishi | Forklift Trucks (Gas/LPG) | FG15, FG18, FG20, FG25, FG30, FGC Series |
| Caterpillar (CAT) | Forklift Trucks (Gas/LPG) | P4000, P5000, P6000, P7000, PC40, GC-Series |
| Various | Industrial Power Units | Generators, Welders, Skid Steers |
From the industrial 4G63 to the heavy-duty 6D22, Ruich Value is your global partner for premium aftermarket Mitsubishi engine components. Find the parts to complete your engine rebuilds below.
| Engine Model | Main Application |
|---|---|
| S4Q | Mitsubishi Forklift, Mini Excavator, Caterpillar |
| 4D30 / 4D31 (6 Holes) | Fuso Canter, Rosa Bus |
| 4D32 (9 holes) | Fuso Canter |
| 4D33 / 4D34 | Fuso Canter FE Series, Rosa Bus |
| 4D35 | Fuso Canter |
| 4D55 | Older L200, Pajero |
| 4D56 / D4BA | L200, Pajero, Hyundai H1/H100, Delica |
| 4D56T / 4D56U | L200 Triton, Pajero Sport (Common Rail) |
| 4DR5 | Mitsubishi Jeep, Canter |
| 4G15 / 4G13 | Mitsubishi Lancer, Colt, Mirage |
| 4G54 | Pajero, Forklift, Mazda B2600 |
| 4G63 | Mitsubishi Forklift (FG25), Galant, L300 |
| 4G64 | Mitsubishi Forklift (FG25), Galant, L300 |
| 4M40 | Pajero, Delica, Triton |
| S4S | Mitsubishi Forklift, Clark, TCM Forklift |
| S6KT | CAT 320 Excavator (Rebadged 6D16) |
| S4E / S4E2 | Forklift, Marine Engine |
| S4F | Agriculture, Tractor |
| S4K | CAT Excavator (E120B), Mitsubishi |
| S6K | CAT Excavator (E200B), Mitsubishi |
| S6S | Forklift (FD35), Excavator |
| 6D14 / 6D15 | Fuso Fighter, Kato/Kobelco Excavator |
| 6D16 / 6D16T | Fuso Fighter, Kobelco SK330 |
| 6D17 | Fuso Fighter (Late model) |
| 6D31 / 6D31T | Fuso FK, Excavators |
| 6D34 / 6D34T | Fuso Fighter, Construction |
| 6D22 / 6D20 / 6D24 | Fuso Super Great, Heavy Excavator |
| 6D40 | Fuso Super Great (Heavy Truck) |
| 8DC91 / 8DC92 | Fuso Super Great, Heavy Dump Truck |
| 8DC11 / 8DC82 | Fuso Heavy Duty Truck |
| 6G72 | Pajero V6, Montero |
| 6DB1 / 6DB10 | Older Fuso Truck |
| 6M70 | Fuso Super Great (Common Rail) |
| 8PC1 / 8PE1 | Fuso Bus, Heavy Truck |
Explore our full range of Mitsubishi Engine Parts.
No, this is a critical distinction. The MD021500 is specifically for the industrial 8-valve SOHC 4G63 used in forklifts. The high-performance 16-valve DOHC turbocharged 4G63T in the Lancer EVO uses a completely different crankshaft profile with different counterweights and balancing for its higher redline. This part is not interchangeable.
Bearing spin is caused by a loss of the oil film between the journal and bearing, leading to metal-on-metal contact. In forklift duty cycles, this is typically due to oil degradation from extended high-rev operation or contamination from the LPG/Gas fuel system. Our nitrided journals (HRC 50-55) provide a crucial layer of defense against this failure mode.
For the industrial cast iron 4G63 block, the main bearing caps should be torqued to 50-55 Nm (37-40 ft-lbs). Always use high-quality assembly lube on the bolt threads and under the heads, and tighten in the correct sequence as specified in the Mitsubishi service manual to ensure proper cap seating.
At a minimum, you must install a complete set of new main bearings, connecting rod bearings, and thrust washers. It is also highly recommended to replace the oil pump, rear main seal, and the front harmonic balancer (crank pulley) to ensure a reliable, long-lasting engine rebuild.
Supply your material handling service center with engine parts that meet and exceed OEM standards. Contact Ruich Value for direct wholesale pricing on our full line of industrial engine components.
For Any Inquiries, please feel free to contact us, Our sales teams are always glad to support your business